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1840:
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In Britain, first postage stamps are sold.
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1841:
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Petzval of Austria builds an f/3.6 lens.
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1841:
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The advertising agency is born.
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1841:
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The first type-composing machine goes into use in London.
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1842:
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Illustrated London News appears.
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1842:
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Another use for paper: the Christmas card.
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1842:
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George Cruikshank's The New School of
Portrait-Painting
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1843:
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In the U.S., the photographic enlarger.
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1843:
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Ada, Lady Lovelace publishes her Notes explaining a computer.
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1844:
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Daguerrotype of Samuel
Morse
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Morse's telegraph connects Washington and Baltimore.
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1845:
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Postal reform bill lowers rates and regulates domestic and
international service.
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1845:
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English Channel cable.
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1845:
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The typewriter ribbon.
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1846:
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In Germany, Zeiss begins manufacturing lenses.
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1846:
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Double cylinder rotary press produces 8,000 sheets an hour.
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1847:
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A Philadelphia newspaper rolls off a rotary printing press.
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1847:
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First use of telegraph as business tool.
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1847:
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In England, Bakewell constructs a "copying telegraph."
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1848:
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Forerunner of the Associated Press is founded in New York.
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1849:
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The photographic slide.
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1850:
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The paper bag arrives.
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1851:
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In the U.S., paper is made from wood fiber.
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1851:
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The Erie railroad depends on the telegraph.
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1851:
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Cable is laid across the English Channel.
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1851:
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Archer invents wet-plate photography process.
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1851:
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In England, Talbot takes a flash photograph at 1/100,000 second
exposure.
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1851:
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Newspaper postage cut in half; free distribution within county.
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1852:
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Postage stamps are widely used.
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1853:
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Envelopes made by paper folding machine.
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1854:
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Telegraph used in Crimean War.
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1854:
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Wood pulp is added by paper makers.
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1854:
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Bourseul in France builds an experimental telephone.
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1854:
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Carte-de-visite process simplifies photography.
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1854:
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Curved stereotype plate obviates column rules; wide ads soon.
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1855:
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Printing telegraph invented in the U.S.
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1855:
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Prepayment of letters made compulsory.
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1855:
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Registered letters enter service.
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1856:
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Poitevan starts photolithography.
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1856:
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Blotting paper replaces sand boxes.
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1856:
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Machine folds newspapers, paper for books.
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1857:
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A machine to set type is demonstrated.
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1857:
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In France, Scott's phonautograph is a forerunner of Edison's
phonograph.
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1858:
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Mail boxes appear on American streets.
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1858:
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First effort at transatlantic telegraph service fails.
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1858:
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Eraser is fitted to the end of a pencil.
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1858:
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An aerial photograph is taken.
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1859:
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Camera gets a wide-angled lens.
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